High-speed, small-driving-voltage phase modulator is developed introducing an n-i-n heterostructure in semiconductor layers. A Mach-Zehnder modulator with an electrode length of 3 mm is fabricated with this phase modulator, and we confirmed 100-km single-mode fiber (SMF) transmission at l0 Gbit/s with a push-pull driving voltage of 1.0 V. Additionally, we describe the techniques of high-speed modulation and report an extremely small π voltage (Vπ) of 2.2 V at 40 Gbit/s.
|Number of pages||9|
|Journal||Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)|
|Publication status||Published - 2005 Aug|
- Mach-Zehnder modulator
- N-i-n structure
- Phase modulator
- Traveling wave electrode